APA (7e ed.) Bronvermelding

Howell, B. F. (1959). Introduction to geophysics. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Howell, Benjamin Franklin. Introduction to Geophysics. New York: McGraw-Hill, 1959.

MLA (9e ed.) Bronvermelding

Howell, Benjamin Franklin. Introduction to Geophysics. McGraw-Hill, 1959.